Video time delay detection method and device

A time-delay and video technology, which is applied in the field of video time-delay detection method and device, can solve the problems of inapplicability, uncollected time-delay test between display modules, etc.

Active Publication Date: 2016-07-20
CHINA MOBILE COMM GRP CO LTD
View PDF6 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has high requirements for the system under test, and requires the time system of each module to be absolutely synchronized to ensure that the time difference between the calculation modules is accurate and objective; but it is not suitable for systems where the acquisition module, codec, and display modules are relatively independent
[0004] At present, there is no solution to collect the delay test between display modules at the local end

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Video time delay detection method and device
  • Video time delay detection method and device
  • Video time delay detection method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] The detection method of video delay in this embodiment can be applied to video conference or video call system, such as figure 1 shown, including the following steps:

[0087] Step 101: Simultaneously acquire the current first real-time time information of the local image acquisition device and the first image displayed by the local video display device; the first image includes the first image captured by the local image acquisition device An image corresponding to the second real-time time information; the first image is an image displayed on the local video display device after the local screen projection application;

[0088] Here, in actual application, the local image acquisition device may be a terminal with a camera function, such as a mobile phone or a camera; the local screen projection application may be a terminal with a video encoding and decoding function, such as a set-top box. The local image acquisition device is used to acquire local images. The loca...

Embodiment 2

[0134] In order to implement the method in Embodiment 1, this embodiment provides a video delay detection device, which can be applied to a video conference or video call system, such as Figure 4 As shown, the device includes: an acquisition unit 41 and a first determination unit 42; wherein,

[0135] The acquiring unit 41 is configured to simultaneously acquire the current first real-time time information of the local image acquisition device and the first image displayed by the local video display device; An image of the second real-time time information corresponding to the first image; the first image is an image displayed on the local video display device after the local screen projection application;

[0136] The first determining unit 42 is configured to determine delay information according to the first real-time time information and the second real-time time information.

[0137] Wherein, in actual application, the local image acquisition device may be a terminal wi...

Embodiment 3

[0181] On the basis of Embodiment 1, this embodiment describes in detail the one-way delay between the local video acquisition module (local image acquisition device) and the local video display module (local video display device) in the video call system detection process.

[0182] In this embodiment, the local image acquisition device can be a mobile phone or an ordinary camera with a camera function; the objects collected by the local image acquisition device include a mobile phone or a stopwatch with a timing function, and the timing accuracy is above the millisecond level; The screen-casting application can be an application on a mobile phone and a set-top box.

[0183] Figure 7 It is a schematic structural diagram of a remote camera system in which the mobile phone is used as the local image acquisition device in this embodiment, that is, the mobile phone A is used as the set-top box. Figure 8 It is a schematic diagram of the testing system of this embodiment.

[01...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a video time delay detection method. The method comprises following steps of obtaining current first real time information of a local end image collection device and a first image displayed by a local end video display device at the same time, wherein the first image is the image containing the second real time information corresponding to the first image collected by the local end image collection device; and determining time delay information according to the first real time information and second real time information. The invention also discloses a video time delay detection device.

Description

technical field [0001] The invention relates to the field of data services, in particular to a method and device for detecting video time delay. Background technique [0002] There is a clear demand for video calls based on set-top boxes, but there are still many technical problems that have not been resolved, including the fact that the set-top box needs to use an external camera to realize local video collection, but the cost of external dedicated cameras is relatively high, and multiplexing mobile phone cameras as The remote camera of the set-top box solves this problem to a certain extent, but it also introduces a certain delay. [0003] Video delay is an important evaluation index of video conference or video call system, and the test of video delay includes intrusive and non-intrusive. Among them, the non-intrusive test method mainly uses a stopwatch to manually record the absolute value of the time when the video arrives at the two modules, and then subtracts the tim...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04N21/442H04N21/4788H04N7/14H04N7/15
Inventor 黄薇
Owner CHINA MOBILE COMM GRP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap